PLANITHERM is Europe's best selling range of high performance low-emissivity glass (low-E glass). The glass utilises the very latest advancements in thermally insulating glass coating technology.

Specially manufactured by Saint-Gobain Glass for the UK market, PLANITHERM products are specifically designed to keep interiors more comfortable in the winter months and improve your home's energy efficiency.

The thermal insulation provided by low-E double glazing is three times more efficient than that of standard double glazing and PLANITHERM products are the ideal low-E solution to meeting and exceeding the newly revised Building Regulations energy efficiency requirements.


PLANITHERM products use a special coating to reflect heat from domestic heat sources back into the room, rather than allowing it to escape through the windows. At the same time, this coating allows free heat and light from the sun to pass through the glass, warming the room and further contributing to the energy efficiency of the windows and helping to reduce your energy bills.

The PLANITHERM range can be combined with many other Saint-Gobain Glass products, providing a multitude of high performance, multi-functional glazing options, including:

  • Self-cleaning and/or solar control glazing 
  • Acoustic insulation
  • Safety and security
  • Obscured and/or decorative glazing

This combination of excellent thermal insulation with high solar heat gain makes PLANITHERM the most energy efficient window glass available and the best possible choice for energy savings.

Energy Saving Trust

Energy Saving Trust Recommended is a product certification and labelling scheme that highlights products that are amongst the most energy efficient on the market and will help consumers to save energy in the home.

With more than 18 years' experience in advising consumers about energy efficiency, the Energy Saving Trust is nationally renowned for its expertise in this field.

Windows with a B rating or higher are eligible to be certified by the Energy Saving Trust Recommended scheme and to use the Energy Saving Trust Recommended label (subject to approval).

High performance energy saving glass products such as PLANITHERM are recognised as being an essential component in improving the energy efficiency of windows and can help windows to qualify for Energy Saving Trust Recommended status.